1985497325 has 24 divisors (see below), whose sum is σ = 2910766080. Its totient is φ = 1314532800.

The previous prime is 1985497313. The next prime is 1985497361. The reversal of 1985497325 is 5237945891.

It is not a de Polignac number, because 1985497325 - 2⁸ = 1985497069 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 190541 + ... + 200690.

It is an arithmetic number, because the mean of its divisors is an integer number (121281920).

Almost surely, 2^1985497325 is an apocalyptic number.

It is an amenable number.

1985497325 is a deficient number, since it is larger than the sum of its proper divisors (925268755).

1985497325 is a wasteful number, since it uses less digits than its factorization.

1985497325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391277 (or 391272 counting only the distinct ones).

The product of its digits is 2721600, while the sum is 53.

The square root of 1985497325 is about 44558.9197018958. The cubic root of 1985497325 is about 1256.8682881740.

The spelling of 1985497325 in words is "one billion, nine hundred eighty-five million, four hundred ninety-seven thousand, three hundred twenty-five".